Reasons to Believe

Mantle Viscosity

TNRTB Archive - Retained for reference information

Geophysicists discovered evidence for supernatural design as they explored the viscosity of Earth’s mantle. Critical for life on planet Earth is that plate tectonics must operate at a variety of levels throughout the past 3.8 billion years so as to perfectly compensate for changes in the Sun’s luminosity (see Faint Sun Paradox article). Plate tectonic efficiency depends on the vigor of mantle convection (circulating flow of fluids), which in turn depends on mantle viscosity. To keep mantle viscosity at the just-right levels requires fine-tuning of both water absorption by the mantle and of heat flow from radioactivity in the Earth’s core. Such exquisite dual fine-tuning is evidence for God’s control of Earth’s interior for the benefit of all life. 


David Stevenson, “Inside History in Depth,” Nature, 428 (2004), pp. 476-477. cgi-taf/DynaPage.taf?file=/nature/journal/v428/n6982/abs/nature02133_fs.html


RTB articles: Facts for Faith article on the faint sun paradox

RTB video: Journey Toward Creation, 2nd edition

RTB book: The Creator and the Cosmos, 3rd edition

Subjects: Earth/Moon Design

Dr. Hugh Ross

Reasons to Believe emerged from my passion to research, develop, and proclaim the most powerful new reasons to believe in Christ as Creator, Lord, and Savior and to use those new reasons to reach people for Christ. Read more about Dr. Hugh Ross.